Best AI Detector and Humanizer Combo Tools in 2025
The best all-in-one AI checker and humanizer tools compared. We tested every major AI detector and humanizer combo to find which delivers the best results.
The most efficient AI writing workflow uses an AI detector and humanizer combo — a single tool that checks your AI score AND rewrites to reduce it.
The Best AI Detector and Humanizer Combo Tools
1. Undetectable AI (Best Overall Combo) — 4.9/5
Detects AI content from 8+ sources and humanizes in a single interface, showing before-and-after detection scores.
Detection covers: ChatGPT/GPT-4, Claude, Google Bard/Gemini, Llama, Jasper AI, custom models
| Detector | Bypass |
|---|---|
| GPTZero | Excellent |
| Turnitin | Excellent |
| Grammarly | Excellent |
| Originality.ai | Excellent |
Price: $9.99/month (200 words/month), scales up
2. Winston AI (Best for Publishers) — 4.5/5
Multi-model detection plus plagiarism, with humanizing capabilities.
- 2,000 words free detection
- $18/month for detection + humanizing
3. Originality.ai (Best for Accuracy) — Detection 4.6/5
The gold standard for publisher-grade AI detection, with a newer humanizer feature.
- Pay-per-use detection ($0.01/100 words)
- $14.95/month
4. Copyleaks (Best for Enterprise) — 4.3/5
LMS integrations (Canvas, Blackboard, Google Classroom). API available.
- From $9.99/month
5. ChimpWrite Free Tool + GPTZero (Best Free Combo)
Not a single tool, but the best free combo workflow:
- Paste AI content into GPTZero → note baseline AI %
- Copy to ChimpWrite Free Tool → humanize
- Paste back into GPTZero → verify score drop
Combo Comparison Table
| Tool | Detection Accuracy | Humanizer Quality | Turnitin Bypass | Free Tier | Price |
|---|---|---|---|---|---|
| Undetectable AI | Excellent | Excellent | Excellent | Trial | $9.99/mo |
| Winston AI | Very Good | Good | Moderate | 2k words | $18/mo |
| Originality.ai | Excellent | Good | Moderate | Pay-per-use | $14.95/mo |
| Copyleaks | Good | Adequate | Weak | Limited | $9.99/mo |
| ChimpWrite + GPTZero | Good | Good | Weak | Free | Free |
Bottom Line
For most users, Undetectable AI is the clear winner as an all-in-one combo tool. For budget users, the free ChimpWrite + GPTZero workflow covers all basic needs at zero cost.